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[ACPI] fix processor_core.c for NR_CPUS > 256

Browse source 
http://bugzilla.kernel.org/show_bug.cgi?id=5128

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Venkatesh Pallipadi 2005-08-30 17:55:00 -04:00 committed by Len Brown
parent dbed12da5b
commit 9a31477a95
1 changed files with 12 additions and 9 deletions
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21
drivers/acpi/processor_core.c
View file

@ -413,18 +413,20 @@ static int acpi_processor_remove_fs(struct acpi_device *device)
#define ARCH_BAD_APICID (0xff)
#endif
static u8 convert_acpiid_to_cpu(u8 acpi_id)
static int convert_acpiid_to_cpu(u8 acpi_id, unsigned int *cpu_index)
{
u16 apic_id;
int i;
unsigned int i;
apic_id = arch_acpiid_to_apicid[acpi_id];
if (apic_id == ARCH_BAD_APICID)
return -1;
for (i = 0; i < NR_CPUS; i++) {
if (arch_cpu_to_apicid[i] == apic_id)
return i;
if (arch_cpu_to_apicid[i] == apic_id) {
*cpu_index = i;
return 0;
}
}
return -1;
}
@ -439,7 +441,8 @@ static int acpi_processor_get_info(struct acpi_processor *pr)
acpi_status status = 0;
union acpi_object object = { 0 };
struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
u8 cpu_index;
unsigned int cpu_index;
int retval;
static int cpu0_initialized;
ACPI_FUNCTION_TRACE("acpi_processor_get_info");
@ -482,10 +485,10 @@ static int acpi_processor_get_info(struct acpi_processor *pr)
*/
pr->acpi_id = object.processor.proc_id;
cpu_index = convert_acpiid_to_cpu(pr->acpi_id);
retval = convert_acpiid_to_cpu(pr->acpi_id, &cpu_index);
/* Handle UP system running SMP kernel, with no LAPIC in MADT */
if (!cpu0_initialized && (cpu_index == 0xff) &&
if (!cpu0_initialized && retval &&
(num_online_cpus() == 1)) {
cpu_index = 0;
}
@ -499,10 +502,10 @@ static int acpi_processor_get_info(struct acpi_processor *pr)
* less than the max # of CPUs. They should be ignored _iff
* they are physically not present.
*/
if (cpu_index >= NR_CPUS) {
if (retval) {
if (ACPI_FAILURE
(acpi_processor_hotadd_init(pr->handle, &pr->id))) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Error getting cpuindex for acpiid 0x%x\n",
pr->acpi_id));
return_VALUE(-ENODEV);